include image for tests

Author: DonJayamanne

README.md

@@ -91,7 +91,7 @@ For further information and details continue through to the [documentation](http
 
 ![Debugging](https://raw.githubusercontent.com/DonJayamanne/pythonVSCode/master/images/standardDebugging.gif)
 
-![Unit Tests](https://raw.githubusercontent.com/DonJayamanne/pythonVSCode/master/images/standardDebugging.gif)
+![Unit Tests](https://raw.githubusercontent.com/DonJayamanne/pythonVSCodeDocs/master/images/unittest.gif)
 
 ![Scientific Tools](https://raw.githubusercontent.com/DonJayamanne/pythonVSCodeDocs/master/images/jupyter/examples.gif)